<template>
	<view v-if="cart.length !== 0">
		<my-address></my-address>
		<!-- 购物车商品列表的标题区域 -->
		<view class="cart-title">
			<!-- 左侧的图标 -->
			<uni-icons type="shop" size="18"></uni-icons>
			<!-- 描述文本 -->
			<text class="cart-title-text">购物车</text>
		</view>
		<!-- 渲染商品列表项 -->
		<uni-swipe-action>
			<block v-for="(item, i) in cart" :key="i">
				<!-- uni-swiper-action uni-swipe-action-item -->
				<uni-swipe-action-item :right-options="options" @click="swiperClick(item)">
					<my-goods @num-change="numChangeHandler" :showNumberBox="true" @radio-change="radioChange"
						:showRadio="true" :goods="item"></my-goods>
				</uni-swipe-action-item>
			</block>
		</uni-swipe-action>
		<!-- 结算区域 -->
		<my-settle></my-settle>
	</view>
	<!-- 空白购物车区域 -->
	<view class="empty-cart" v-else>
		<image src="/static/cart_empty@2x.png" class="empty-img"></image>
		<text class="tip-text">空空如也~</text>
	</view>
</template>

<script>
	// 获取vuex里面的购物车的数据,m_cart state cart
	// 使用辅助函数mapState Mapmutaions mapactioins
	import {
		mapState,
		mapGetters,
		mapMutations
	} from 'vuex';
	import {
		tabbar_badge
	} from '../../mixins/index.js';
	// tabBar角标的数量也是vuex里面total的数量，先拿到total
	export default {
		data() {
			return {
				options: [{
					text: '删除',
					style: {
						backgroundColor: '#c00000'
					}
				}]
			};
		},
		mixins: [tabbar_badge],
		computed: {
			// 第一个参数是模块名
			// 第二个参数是获取数据的key的列表
			...mapState('m_cart', ['cart'])
		},
		onLoad() {},
		methods: {
			...mapMutations('m_cart', ['changeGoodsState', 'updateGoodsCount', 'removeGoodsItem']),
			radioChange(e) {
				this.changeGoodsState(e);
			},
			swiperClick(goods) {
				// 点击删除按钮删除当前商品列表项
				this.removeGoodsItem(goods);
				this.setBadge();
			},
			numChangeHandler(e) {
				// console.log(e);
				this.updateGoodsCount(e);
				this.setBadge();
			}
		}
	};
</script>

<style lang="scss">
	.cart-title {
		height: 40px;
		display: flex;
		align-items: center;
		font-size: 14px;
		padding-left: 5px;
		border-bottom: 1px solid #efefef;

		.cart-title-text {
			margin-left: 10px;
		}
	}

	.empty-cart {
		display: flex;
		flex-direction: column;
		align-items: center;
		padding-top: 150px;

		.empty-img {
			width: 90px;
			height: 90px;
		}

		.tip-text {
			font-size: 12px;
			color: gray;
			margin-top: 15px;
		}
	}
</style>
